[7d4fbcd] | 1 | #include <string.h> |
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| 2 | #include "owl.h" |
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| 3 | |
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| 4 | #define BOTTOM_OFFSET 1 |
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| 5 | |
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[0b9e607] | 6 | static void owl_viewwin_redraw(owl_window *w, WINDOW *curswin, void *user_data); |
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[61c1f19] | 7 | static void owl_viewwin_set_window(owl_viewwin *v, owl_window *w); |
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[0b9e607] | 8 | |
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[b2b0773] | 9 | /* initialize the viewwin e. 'win' is an already initialzed curses |
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| 10 | * window that will be used by viewwin |
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| 11 | */ |
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[68f63a2] | 12 | void owl_viewwin_init_text(owl_viewwin *v, owl_window *win, const char *text) |
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[b2b0773] | 13 | { |
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[7d4fbcd] | 14 | owl_fmtext_init_null(&(v->fmtext)); |
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| 15 | if (text) { |
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| 16 | owl_fmtext_append_normal(&(v->fmtext), text); |
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[4083c49] | 17 | if (text[0] != '\0' && text[strlen(text) - 1] != '\n') { |
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[7d4fbcd] | 18 | owl_fmtext_append_normal(&(v->fmtext), "\n"); |
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| 19 | } |
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| 20 | v->textlines=owl_fmtext_num_lines(&(v->fmtext)); |
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| 21 | } |
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| 22 | v->topline=0; |
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| 23 | v->rightshift=0; |
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[afbf668] | 24 | v->onclose_hook = NULL; |
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[68f63a2] | 25 | |
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| 26 | owl_viewwin_set_window(v, win); |
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[afbf668] | 27 | } |
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| 28 | |
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[e19eb97] | 29 | void owl_viewwin_append_text(owl_viewwin *v, const char *text) { |
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[afbf668] | 30 | owl_fmtext_append_normal(&(v->fmtext), text); |
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[5b68c05] | 31 | v->textlines=owl_fmtext_num_lines(&(v->fmtext)); |
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| 32 | owl_viewwin_dirty(v); |
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| 33 | } |
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| 34 | |
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| 35 | /* Schedule a redraw of 'v'. Exported for hooking into the search |
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| 36 | string; when we have some way of listening for changes, this can be |
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| 37 | removed. */ |
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| 38 | void owl_viewwin_dirty(owl_viewwin *v) |
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| 39 | { |
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| 40 | if (v->window) |
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[68f63a2] | 41 | owl_window_dirty(v->window); |
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[7d4fbcd] | 42 | } |
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| 43 | |
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[b2b0773] | 44 | /* initialize the viewwin e. 'win' is an already initialzed curses |
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| 45 | * window that will be used by viewwin |
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| 46 | */ |
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[68f63a2] | 47 | void owl_viewwin_init_fmtext(owl_viewwin *v, owl_window *win, const owl_fmtext *fmtext) |
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[b2b0773] | 48 | { |
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[dd6af02] | 49 | char *text; |
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| 50 | |
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[7d4fbcd] | 51 | owl_fmtext_copy(&(v->fmtext), fmtext); |
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[dd6af02] | 52 | text = owl_fmtext_print_plain(fmtext); |
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| 53 | if (text[0] != '\0' && text[strlen(text) - 1] != '\n') { |
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| 54 | owl_fmtext_append_normal(&(v->fmtext), "\n"); |
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| 55 | } |
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[3e55268] | 56 | owl_free(text); |
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[7d4fbcd] | 57 | v->textlines=owl_fmtext_num_lines(&(v->fmtext)); |
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| 58 | v->topline=0; |
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| 59 | v->rightshift=0; |
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[68f63a2] | 60 | |
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| 61 | owl_viewwin_set_window(v, win); |
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[7d4fbcd] | 62 | } |
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| 63 | |
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[61c1f19] | 64 | static void owl_viewwin_set_window(owl_viewwin *v, owl_window *w) |
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[b2b0773] | 65 | { |
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[68f63a2] | 66 | if (v->window) { |
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[7a6e6c7] | 67 | g_signal_handler_disconnect(v->window, v->sig_redraw_id); |
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[69873f7] | 68 | g_object_unref(v->window); |
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[68f63a2] | 69 | } |
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| 70 | v->window = w; |
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| 71 | if (w) { |
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[69873f7] | 72 | g_object_ref(v->window); |
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[0b9e607] | 73 | v->sig_redraw_id = g_signal_connect(w, "redraw", G_CALLBACK(owl_viewwin_redraw), v); |
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[68f63a2] | 74 | } |
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[7d4fbcd] | 75 | } |
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| 76 | |
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[afbf668] | 77 | void owl_viewwin_set_onclose_hook(owl_viewwin *v, void (*onclose_hook) (owl_viewwin *vwin, void *data), void *onclose_hook_data) { |
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| 78 | v->onclose_hook = onclose_hook; |
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| 79 | v->onclose_hook_data = onclose_hook_data; |
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| 80 | } |
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| 81 | |
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[b2b0773] | 82 | /* regenerate text on the curses window. */ |
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[0b9e607] | 83 | static void owl_viewwin_redraw(owl_window *w, WINDOW *curswin, void *user_data) |
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[b2b0773] | 84 | { |
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[7d4fbcd] | 85 | owl_fmtext fm1, fm2; |
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[68f63a2] | 86 | owl_viewwin *v = user_data; |
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[c447d9c] | 87 | int winlines, wincols; |
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| 88 | |
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| 89 | owl_window_get_position(w, &winlines, &wincols, 0, 0); |
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[7d4fbcd] | 90 | |
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[68f63a2] | 91 | werase(curswin); |
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| 92 | wmove(curswin, 0, 0); |
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[7d4fbcd] | 93 | |
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[af2ca19] | 94 | owl_fmtext_init_null(&fm1); |
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| 95 | owl_fmtext_init_null(&fm2); |
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| 96 | |
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[c447d9c] | 97 | owl_fmtext_truncate_lines(&(v->fmtext), v->topline, winlines-BOTTOM_OFFSET, &fm1); |
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| 98 | owl_fmtext_truncate_cols(&fm1, v->rightshift, wincols-1+v->rightshift, &fm2); |
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[7d4fbcd] | 99 | |
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[449c682] | 100 | owl_fmtext_curs_waddstr(&fm2, curswin); |
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[7d4fbcd] | 101 | |
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| 102 | /* print the message at the bottom */ |
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[c447d9c] | 103 | wmove(curswin, winlines-1, 0); |
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[68f63a2] | 104 | wattrset(curswin, A_REVERSE); |
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[c447d9c] | 105 | if (v->textlines - v->topline > winlines-BOTTOM_OFFSET) { |
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[68f63a2] | 106 | waddstr(curswin, "--More-- (Space to see more, 'q' to quit)"); |
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[7d4fbcd] | 107 | } else { |
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[68f63a2] | 108 | waddstr(curswin, "--End-- (Press 'q' to quit)"); |
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[7d4fbcd] | 109 | } |
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[68f63a2] | 110 | wattroff(curswin, A_REVERSE); |
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[7d4fbcd] | 111 | |
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[7ab0020] | 112 | owl_fmtext_cleanup(&fm1); |
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| 113 | owl_fmtext_cleanup(&fm2); |
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[7d4fbcd] | 114 | } |
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| 115 | |
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[b2b0773] | 116 | void owl_viewwin_pagedown(owl_viewwin *v) |
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| 117 | { |
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[c447d9c] | 118 | int winlines; |
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| 119 | owl_window_get_position(v->window, &winlines, 0, 0, 0); |
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| 120 | v->topline+=winlines - BOTTOM_OFFSET; |
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| 121 | if ( (v->topline+winlines-BOTTOM_OFFSET) > v->textlines) { |
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| 122 | v->topline = v->textlines - winlines + BOTTOM_OFFSET; |
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[7d4fbcd] | 123 | } |
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[5b68c05] | 124 | owl_viewwin_dirty(v); |
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[7d4fbcd] | 125 | } |
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| 126 | |
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[b2b0773] | 127 | void owl_viewwin_linedown(owl_viewwin *v) |
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| 128 | { |
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[c447d9c] | 129 | int winlines; |
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| 130 | owl_window_get_position(v->window, &winlines, 0, 0, 0); |
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[7d4fbcd] | 131 | v->topline++; |
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[c447d9c] | 132 | if ( (v->topline+winlines-BOTTOM_OFFSET) > v->textlines) { |
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| 133 | v->topline = v->textlines - winlines + BOTTOM_OFFSET; |
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[7d4fbcd] | 134 | } |
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[5b68c05] | 135 | owl_viewwin_dirty(v); |
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[7d4fbcd] | 136 | } |
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| 137 | |
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[b2b0773] | 138 | void owl_viewwin_pageup(owl_viewwin *v) |
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| 139 | { |
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[c447d9c] | 140 | int winlines; |
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| 141 | owl_window_get_position(v->window, &winlines, 0, 0, 0); |
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| 142 | v->topline-=winlines; |
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[7d4fbcd] | 143 | if (v->topline<0) v->topline=0; |
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[5b68c05] | 144 | owl_viewwin_dirty(v); |
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| 145 | |
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[7d4fbcd] | 146 | } |
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| 147 | |
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[b2b0773] | 148 | void owl_viewwin_lineup(owl_viewwin *v) |
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| 149 | { |
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[7d4fbcd] | 150 | v->topline--; |
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| 151 | if (v->topline<0) v->topline=0; |
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[5b68c05] | 152 | owl_viewwin_dirty(v); |
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[7d4fbcd] | 153 | } |
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| 154 | |
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[b2b0773] | 155 | void owl_viewwin_right(owl_viewwin *v, int n) |
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| 156 | { |
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[7d4fbcd] | 157 | v->rightshift+=n; |
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[5b68c05] | 158 | owl_viewwin_dirty(v); |
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[7d4fbcd] | 159 | } |
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| 160 | |
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[b2b0773] | 161 | void owl_viewwin_left(owl_viewwin *v, int n) |
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| 162 | { |
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[7d4fbcd] | 163 | v->rightshift-=n; |
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| 164 | if (v->rightshift<0) v->rightshift=0; |
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[5b68c05] | 165 | owl_viewwin_dirty(v); |
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[7d4fbcd] | 166 | } |
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| 167 | |
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[b2b0773] | 168 | void owl_viewwin_top(owl_viewwin *v) |
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| 169 | { |
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[7d4fbcd] | 170 | v->topline=0; |
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| 171 | v->rightshift=0; |
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[5b68c05] | 172 | owl_viewwin_dirty(v); |
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[7d4fbcd] | 173 | } |
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| 174 | |
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[b2b0773] | 175 | void owl_viewwin_bottom(owl_viewwin *v) |
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| 176 | { |
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[c447d9c] | 177 | int winlines; |
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| 178 | owl_window_get_position(v->window, &winlines, 0, 0, 0); |
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| 179 | v->topline = v->textlines - winlines + BOTTOM_OFFSET; |
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[5b68c05] | 180 | owl_viewwin_dirty(v); |
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[7d4fbcd] | 181 | } |
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| 182 | |
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[963b471] | 183 | void owl_viewwin_cleanup(owl_viewwin *v) |
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[b2b0773] | 184 | { |
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[5f7eadf] | 185 | owl_viewwin_set_window(v, NULL); |
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[afbf668] | 186 | if (v->onclose_hook) { |
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| 187 | v->onclose_hook(v, v->onclose_hook_data); |
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[8721756] | 188 | v->onclose_hook = NULL; |
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| 189 | v->onclose_hook_data = NULL; |
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[afbf668] | 190 | } |
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[7ab0020] | 191 | owl_fmtext_cleanup(&(v->fmtext)); |
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[7d4fbcd] | 192 | } |
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